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Investments (Gross Gains And Losses Realized On Sales Of Investments) (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Fixed Maturity Securities [Member] |  |  |
Investments [Line Items] |  |  |
Gross Realized Gains | $ 7,015 us-gaap_TradingSecuritiesRealizedGain / us-gaap_DebtSecurityAxis = us-gaap_FixedIncomeSecuritiesMember | $ 9,320 us-gaap_TradingSecuritiesRealizedGain / us-gaap_DebtSecurityAxis = us-gaap_FixedIncomeSecuritiesMember | $ 11,473 us-gaap_TradingSecuritiesRealizedGain / us-gaap_DebtSecurityAxis = us-gaap_FixedIncomeSecuritiesMember
Gross Realized Losses | (9,734)us-gaap_TradingSecuritiesRealizedLoss / us-gaap_DebtSecurityAxis = us-gaap_FixedIncomeSecuritiesMember | (3,842)us-gaap_TradingSecuritiesRealizedLoss / us-gaap_DebtSecurityAxis = us-gaap_FixedIncomeSecuritiesMember | (83)us-gaap_TradingSecuritiesRealizedLoss / us-gaap_DebtSecurityAxis = us-gaap_FixedIncomeSecuritiesMember
Net | (2,719)us-gaap_TradingSecuritiesRealizedGainLoss / us-gaap_DebtSecurityAxis = us-gaap_FixedIncomeSecuritiesMember | 5,478 us-gaap_TradingSecuritiesRealizedGainLoss / us-gaap_DebtSecurityAxis = us-gaap_FixedIncomeSecuritiesMember | 11,390 us-gaap_TradingSecuritiesRealizedGainLoss / us-gaap_DebtSecurityAxis = us-gaap_FixedIncomeSecuritiesMember
Equity Securities [Member] |  |  |
Investments [Line Items] |  |  |
Gross Realized Gains | 59,342 us-gaap_TradingSecuritiesRealizedGain / us-gaap_DebtSecurityAxis = us-gaap_EquitySecuritiesMember | 82,385 us-gaap_TradingSecuritiesRealizedGain / us-gaap_DebtSecurityAxis = us-gaap_EquitySecuritiesMember | 19,538 us-gaap_TradingSecuritiesRealizedGain / us-gaap_DebtSecurityAxis = us-gaap_EquitySecuritiesMember
Gross Realized Losses | (17,705)us-gaap_TradingSecuritiesRealizedLoss / us-gaap_DebtSecurityAxis = us-gaap_EquitySecuritiesMember | (58,297)us-gaap_TradingSecuritiesRealizedLoss / us-gaap_DebtSecurityAxis = us-gaap_EquitySecuritiesMember | (12,017)us-gaap_TradingSecuritiesRealizedLoss / us-gaap_DebtSecurityAxis = us-gaap_EquitySecuritiesMember
Net | 41,637 us-gaap_TradingSecuritiesRealizedGainLoss / us-gaap_DebtSecurityAxis = us-gaap_EquitySecuritiesMember | 24,088 us-gaap_TradingSecuritiesRealizedGainLoss / us-gaap_DebtSecurityAxis = us-gaap_EquitySecuritiesMember | 7,521 us-gaap_TradingSecuritiesRealizedGainLoss / us-gaap_DebtSecurityAxis = us-gaap_EquitySecuritiesMember
Short-Term Investments [Member] |  |  |
Investments [Line Items] |  |  |
Gross Realized Gains | 0 us-gaap_TradingSecuritiesRealizedGain / us-gaap_DebtSecurityAxis = us-gaap_ShortTermInvestmentsMember | 0 us-gaap_TradingSecuritiesRealizedGain / us-gaap_DebtSecurityAxis = us-gaap_ShortTermInvestmentsMember | 2 us-gaap_TradingSecuritiesRealizedGain / us-gaap_DebtSecurityAxis = us-gaap_ShortTermInvestmentsMember
Gross Realized Losses | (1,943)us-gaap_TradingSecuritiesRealizedLoss / us-gaap_DebtSecurityAxis = us-gaap_ShortTermInvestmentsMember | (903)us-gaap_TradingSecuritiesRealizedLoss / us-gaap_DebtSecurityAxis = us-gaap_ShortTermInvestmentsMember | (722)us-gaap_TradingSecuritiesRealizedLoss / us-gaap_DebtSecurityAxis = us-gaap_ShortTermInvestmentsMember
Net | $ (1,943)us-gaap_TradingSecuritiesRealizedGainLoss / us-gaap_DebtSecurityAxis = us-gaap_ShortTermInvestmentsMember | $ (903)us-gaap_TradingSecuritiesRealizedGainLoss / us-gaap_DebtSecurityAxis = us-gaap_ShortTermInvestmentsMember | $ (720)us-gaap_TradingSecuritiesRealizedGainLoss / us-gaap_DebtSecurityAxis = us-gaap_ShortTermInvestmentsMember

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- Definition This item represents the gain realized during the period from the sale of trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph c -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(c)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 + Details
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- Definition This item represents the loss realized during the period from the sale of trading securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 7 -Subparagraph c -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.7(c)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Trading Securities -URI http://asc.fasb.org/extlink&oid=6526789 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 + Details
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